Map of additional parameter to submit to remove data source.

<div class="definition">
    Object, default = {}
</div>

Adding properties to <span class="property">.postData</span> object will instruct the grid to submit these parameters to the remote data source
with each remote request (pull, sort, search, save, delete).
<div style="height: 10px"></div>

You can defined it during object creation:
<textarea class="javascript">
let grid = new w2grid({
    name    : 'grid',
    url        : 'url/to/server',
    columns: [
        { field: 'recid', text: 'ID', size: '50px' },
        { field: 'lname', text: 'Last Name', size: '30%' },
        { field: 'fname', text: 'First Name', size: '30%' },
        { field: 'email', text: 'Email', size: '40%' },
        { field: 'sdate', text: 'End Date', size: '120px' }
    ],
    postData: {
        param1 : 'value1',
        param2 : 'value2'
    }
});
</textarea>

Or any time during the run-time:
<textarea class="javascript">
w2ui.grid.postData['myVar'] = 'value';
</textarea>